Lg Energy Solution, Ltd.

Han-Young Lee

Bum-Young Jung

Kyung-Min Lee

Jeong-Ho Ha

Yeo-Min Yoon

A terminal busbar includes a coupling portion that is approximately in the shape of a plate having a small thickness relative to a length and a width, and a terminal portion that is bent in a vertical direction at one end of the coupling portion. The coupling portion includes a first metal layer, a material layer and a second metal layer stacked in a sequential order along an extension direction of the terminal portion, the material layer is conductive in a normal condition, but can act as resistance when temperature rises, and the material layer includes a gas generating material that decomposes at a predetermined temperature or above to produce gas, which increases resistance. The first metal layer is integrally formed with the terminal portion, and the second metal layer provides a connect surface with an electrode lead of the battery cell.

Terminal busbar for improving safety, and battery module and battery pack comprising same

A battery module includes a first battery cell and a second battery cell respectively having a positive electrode lead and a negative electrode lead and connected to each other in series; and a short circuit inducing member having one longitudinal side interposed between the negative electrode lead of the first battery cell and the positive electrode lead of the second battery cell and the other longitudinal side located between the positive electrode lead of the first battery cell and the negative electrode lead of the second battery cell. When a potential difference between the negative electrode lead of the first battery cell and the positive electrode lead of the second battery cell increases over a reference value, the other longitudinal side of the short circuit inducing member makes flexural deformation toward the negative electrode lead of the second battery cell to come into contact with the negative electrode lead.

Battery module having overcharge prevention structure, battery pack comprising the same, and vehicle comprising the battery pack

A battery module blocks current when the temperature rises, a battery pack includes the battery module, and a vehicle includes the battery pack. The battery module includes a bus bar having an approximately thin plate shape compared to a length and a width and having linear grooves provided in a left surface and a right surface along a longitudinal direction, respectively; and battery cells respectively located on the left surface and the right surface of the bus bar, physically contacting with their respective electrode leads inserted into the grooves, and electrically connected to each other with the bus bar interposed therebetween, and wherein sizes of the grooves increase in a thickness direction at a certain temperature or higher to release a physical contact between the electrode leads and the bus bar such that an electrical connection between the battery cells is released.

Battery module with improved safety, battery pack comprising battery module, and vehicle comprising battery pack

A battery module improves safety by blocking current when the temperature rises, a battery pack includes the battery module, and a vehicle includes the battery pack. The battery module includes two or more battery cells, an electrode assembly having both ends respectively connected to one ends of electrode leads of opposite polarities in a pouch case together with an electrolyte and other ends of the electrode leads are exposed to an outside of the pouch case, wherein the electrode leads and a bus bar connecting a first battery cell and a second battery cell, wherein the bus bar comprises a metal layer and a material layer that is normally conductive but may act as a resistor when a temperature rises, and wherein the material layer comprises a gas generating material that is decomposed at a certain temperature or higher to generate a gas and increase resistance.

Battery module with improved safety, battery pack including the battery module and vehicle including the battery pack

A battery module improves heat dissipation by causing electronic cooling to occur at a specific voltage or higher, a battery pack including the battery module and a vehicle including the battery pack. The battery module including a plurality of battery cells and lead junction parts in which respective leads of the battery cells are joined to each other includes a thermoelectric device mounted onto the lead junction part; and a constant voltage device configured to divert a current of the battery module to the thermoelectric device when an overcharge of the battery module occurs, and wherein the thermoelectric device is driven to electronically cool the lead junction part of the battery module when the overcharge of the battery module occurs.

Battery module with improved heat dissipation, battery pack including the battery module and vehicle including the battery pack

A battery module increases heat dissipation by causing electronic cooling to occur at a breakdown voltage or higher, a battery pack including the battery module and a vehicle including the battery pack. The battery module includes a battery cell assembly having a plurality of battery cells and lead junction parts in which respective leads of the battery cells are joined to each other includes a thermoelectric device in which a heat absorbing portion is located on surfaces of the battery cells which are located at both outsides among the battery cells in the battery cell assembly, which correspond to a side surface of the battery cell assembly; and a constant voltage device configured to divert a current of the battery module to the thermoelectric device when an overcharge of the battery module occurs, to electronically cool the battery module when the overcharge of the battery module occurs.

Growing community of inventors

Daejeon, South Korea

Han-Young Lee